JSON Compare Tool

Developer Tools

Compare two JSON files and list changes

FreePrivateInstant
Add a file · .txt .md .csv .json … · up to 2.00 MB
Add a file · .txt .md .csv .json … · up to 2.00 MB
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  2. Press Copy code.
  3. Paste it into your page, blog, WordPress or Notion HTML block.
Height
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The tool runs inside your visitor's browser, nothing is uploaded, and a small "Powered by ToolCloak" line stays under it. The second line (script) is optional: it makes the frame fit the tool's height.

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History

All history →

JSON Compare Tool — at a glance

Find out exactly what changed between two versions of a JSON file.

Input
{"age": 25}
{"age": 26}
Run
Result
~ changed age: 25 → 26

How to use it — step by step

Two valid JSON documents — the old one in the top box and the new one in the bottom box.

1

Paste your input

Paste or type your content into the big input box.

2

Compare JSON

Press the button. The result is created instantly on your device.

3

Copy the result

Check the output and press Copy to use it anywhere.

Pro tips

Small things that make the result better.

✦Key order does not matter — only real changes are reported.
✦Paths such as user.address.city show where a change happened.
✦Arrays are compared position by position.

Quick facts

3 typesadded, removed, changed
Pathsfull key paths
Deepnested compare
Freeno signup

Frequently Asked Questions

Are arrays compared in order?+

Yes. Item 0 is compared with item 0, and so on. If you reorder an array it will show as changed.

Is my data uploaded?+

No. The comparison runs inside your browser.

Is my data safe?+

Yes. Everything runs inside your own browser. Your text, files and images are never uploaded to any server.

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